Potential of repurposed agricultural ingredients in propylene glycol emulsions as oral toxicants for control of adult mosquitoes (Diptera: Culicidae)

Journal of Medical Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Mosquito control operations have limited options available for adult mosquito reduction. Untapped alternatives exist in adjacent pest-management industries, but translation and validation various technologies is still ongoing. The attractive targeted sugar bait (ATSB) strategy a formulation platform that amenable to toxicants not otherwise widely used techniques equipment. To find fast-acting, effective ATSB, choice assays were conducted using fipronil, spinosyn, dinotefuran, clothianidin, imidacloprid, bifenazate, indoxacarb, abamectin, λ-cyhalothrin against Aedes aegypti (L.) (Diptera: Culcidae) as model system. Active ingredients emulsified propylene glycol, secondary toxicant aid sucrose solution. Treatments presented tandem with unadulterated 10% all assays. In both 24-h mortality fecal droplet analysis, indoxacarb was ingested similarly often the water-only group yielded overall lowest mortality. Imidacloprid, λ-cyhalothrin, abamectin readily ingested, some cases analysis indicated bias towards consumption of treated solutions. Mortality first 24 h over 95% aforementioned toxicants, supporting they kill time suitable palatability or repellency response profile mosquitoes. But imidacloprid (resistance) (pollinators) roadblocks use ATSB because potential nontarget impact pollinators prevalent insecticide resistance issues. However, appears be promising ingredient future formulations establish quick vector interruption improve class variety management.

Language: Английский

A new endophytic Penicillium oxalicum with aphicidal activity and its infection mechanism

Pest Management Science, Journal Year: 2024, Volume and Issue: 80(11), P. 5706 - 5717

Published: July 3, 2024

Aphid infestation adversely affects the yield and quality of crops. Rapid reproduction insecticidal resistance have made controlling aphids in field challenging. Therefore, present study investigated property Penicillium oxalicum (QLhf-1) its mechanism action against aphids, Hyalopterus arundimis Fabricius.

Language: Английский

The Effect of Botanical Pesticides Azadirachtin, Celangulin, and Veratramine Exposure on an Invertebrate Species Solenopsis invicta (Hymenoptera: Formicidae)

Toxins, Journal Year: 2023, Volume and Issue: 16(1), P. 6 - 6

Published: Dec. 20, 2023

The injudicious and excessive use of synthetic pesticides has deleterious effects on humans, ecosystems, biodiversity. As an alternative to traditional crop-protection methods, botanical are gaining importance. In this research endeavor, we examined the contact toxicity, knockdown time, lethal toxicity horizontal transmission three natural from plants (azadirachtin, celangulin, veratramine) red imported fire ants (RIFA; Solenopsis invicta). Our findings indicated that azadirachtin celangulin exhibited relatively high with median dose (LD50) values 0.200 0.046 ng/ant, respectively, whereas veratramine LD50 value 544.610 ng/ant for large workers S. invicta at 24 h post-treatment. Upon treatment 0.125 mg/L, (median time) LT50 were determined be 60.410 9.905 h, respectively. For veratramine, 46.967 was achieved after being tested 200 mg/L. Remarkably, found exhibit transfer among RIFA, secondary mortality (100%) tertiary mortalities (>61%) 48 250 as well their dust formulations 72 h. However, did not significant or even concentrations. These suggest likely have a highly prominent potential in management invicta.

Language: Английский